105 lines
2.7 KiB
C#
105 lines
2.7 KiB
C#
using System;
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using System.IO;
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/// <summary>
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/// Socket通信过程中的数据包 处理具体拆包装包逻辑
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/// </summary>
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public class SocketDataPack
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{
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// 消息：数据总长度(4byte) + 数据类型(2byte) + 数据(N byte)
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public const int HEAD_DATA_LEN = 4;
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public const int HEAD_TYPE_LEN = 2;
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public static int HeadLen
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{
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get { return HEAD_DATA_LEN + HEAD_TYPE_LEN; }
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}
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/// <summary>
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/// 数据包类型
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/// </summary>
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public UInt16 Type;
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/// <summary>
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/// 数据包数据
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/// </summary>
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public byte[] Data;
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public byte[] Buff;
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public int BuffLength
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{
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get { return Buff.Length; }
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}
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public int DataLength
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{
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get { return Data.Length; }
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}
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public SocketDataPack()
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{
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}
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public SocketDataPack(UInt16 type, byte[] data)
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{
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Type = type;
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Data = data;
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Buff = GetBuff(Type, Data);
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}
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public static byte[] GetBuff(UInt16 type, byte[] data)
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{
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byte[] buff = new byte[data.Length + HeadLen];
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byte[] temp;
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temp = BitConverter.GetBytes(buff.Length);
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Array.Copy(temp, 0, buff, 0, HEAD_DATA_LEN);
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temp = BitConverter.GetBytes(type);
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Array.Copy(temp, 0, buff, HEAD_DATA_LEN, HEAD_TYPE_LEN);
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Array.Copy(data, 0, buff, HeadLen, data.Length);
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return buff;
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}
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public static SocketDataPack Unpack(byte[] buff)
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{
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try
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{
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if (buff.Length < HeadLen)
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{
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// 头部没取完则返回
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return null;
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}
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byte[] temp;
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// 取数据长度
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temp = new byte[HEAD_DATA_LEN];
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Array.Copy(buff, 0, temp, 0, HEAD_DATA_LEN);
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int buffLength = BitConverter.ToInt32(temp, 0);
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if (buffLength <= 0) return null;
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if (buffLength > buff.Length)
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{
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// 数据没取完
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return null;
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}
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int dataLength = buffLength - HeadLen;
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// 取数据类型
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temp = new byte[HEAD_TYPE_LEN];
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Array.Copy(buff, HEAD_DATA_LEN, temp, 0, HEAD_TYPE_LEN);
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UInt16 dataType = BitConverter.ToUInt16(temp, 0);
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// 取数据
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byte[] data = new byte[dataLength];
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Array.Copy(buff, HeadLen, data, 0, dataLength);
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var dataPack = new SocketDataPack(dataType, data);
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// UnityEngine.Debug.LogFormat("buffLen:{0} type:{1} dataLength:{2}", buffLength, dataType, data.Length);
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return dataPack;
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}
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catch
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{
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// 存在不完整数据解包 则返回null
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return null;
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}
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}
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} |